Newhaven Display's LCD Serial Displays have three unique interfaces that are selectable by soldering jumpers onto the back of the display's PCB. These displays also have an on-board PIC microprocessor that translates RS232, SPI or I²C protocol into standard parallel HD44780 protocol.

The on-board microprocessor initializes the LCD on power up. All standard LCD commands are available in each interface protocol. Characters are sent to the LCD via standard ASCII codes and the contrast and backlight brightness are adjustable through software commands. By incorporating the translating microprocessor with the display, it eliminates the need for additional boards or logic devices.